HPACK: Split header fields in encoder.

net/spdy/hpack_encoder.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/spdy/hpack_encoder.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "net/spdy/hpack_header_table.h"
@@ skipping 19 matching lines @@
   // Separate header set into pseudo-headers and regular headers.
   Representations pseudo_headers;
   Representations regular_headers;
   for (std::map<string, string>::const_iterator it = header_set.begin();
        it != header_set.end(); ++it) {
     if (it->first == "cookie") {
       // Note that there can only be one "cookie" header, because header_set is
       // a map.
       CookieToCrumbs(*it, &regular_headers);
     } else if (it->first[0] == kPseudoHeaderPrefix) {
-      pseudo_headers.push_back(make_pair(
-          StringPiece(it->first), StringPiece(it->second)));
+      DecomposeRepresentation(*it, &pseudo_headers);
     } else {
-      regular_headers.push_back(make_pair(
-          StringPiece(it->first), StringPiece(it->second)));
+      DecomposeRepresentation(*it, &regular_headers);
     }
   }
 
   // Encode pseudo-headers.
   for (Representations::const_iterator it = pseudo_headers.begin();
        it != pseudo_headers.end(); ++it) {
     HpackEntry* entry = header_table_.GetByNameAndValue(it->first, it->second);
     if (entry != NULL) {
       EmitIndex(entry);
     } else {
@@ skipping 138 matching lines @@
     if (pos != cookie.second.size() && cookie.second[pos] == ' ') {
       pos++;
     }
   }
   // Sort crumbs and remove duplicates.
   std::sort(out->begin() + prior_size, out->end());
   out->erase(std::unique(out->begin() + prior_size, out->end()),
              out->end());
 }
 
+// static
+void HpackEncoder::DecomposeRepresentation(const Representation& header_field,
+                                           Representations* out) {
+  size_t pos = 0;
+  size_t end = 0;
+  while (end != StringPiece::npos) {
+    end = header_field.second.find('\0', pos);
+    out->push_back(make_pair(header_field.first,
+                             header_field.second.substr(pos, end - pos)));
+    pos = end + 1;
+  }
+}
+
 }  // namespace net